Nothing more than a drawing board, that you will probably never use except once.
I had a few games, including mario 64 ds, and spiderman2(YUCK!)
All of the magazines were toying around with the ds saying how cool it was especially pictochat, the ds's communication app.
The problem that you have when you use pictochat is that it's only local..... And that's useless when you can just talk to someone. You can however use it in a library, or school, but you also have to stay within 30 or so feet.
You can use different symbols and draw pictures, though. So when you're bored you can draw a picture.(which you probably won't)Pictochat could've been great, if only nintendo added better features before launch. Like Wi-Fi or better stylus drawing. But it is free, so you have nothing to risk.